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Finding the Fourth Proportional to 3,750.80, 5,629.01 and 1,413.11

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Solution

The fourth proportional to 3,750.80, 5,629.01 and 1,413.11 is: 2,120.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,750.80 : 5,629.01 = 1,413.11 : x
  2. Step 2: Convert to fraction form
    3,750.80/5,629.01 = 1,413.11/x
  3. Step 3: Cross multiply
    3,750.80x = 5,629.01 × 1,413.11
  4. Step 4: Simplify right side
    3,750.80x = 7,954,410.32
  5. Step 5: Solve for x
    x = 7,954,410.32/3,750.80
  6. Step 6: Final answer
    x = 2,120.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.